Does the latency to the disks/datastores look OK? Can't think of much else that you didn't already cover...
Jeff On Wed, Apr 20, 2011 at 3:37 PM, Steven M. Caesare <[email protected]>wrote: > Not an NT-specific question per se, but thought I’d float it out there, as > I’ve seen similar discussed: > > > > So, I had ESXi 4.0 seeing ~93MB/sec on 1Gb links to my OpenFiler SAN. Not > bad , as that represents ~750Mbps before overhead on the link. > > > > I upgraded my box to 4.1. Well, actually I re-installed v4.1, as I decided > to install to a USB flash drive, in order to eliminate spinning media in the > ESXi hosts themselves. After the new install, I imported the existing > machines that were originally living on the 4.0 build (they were in a > separate data store). I also installed additional NICS and added more mem to > the SAN. > > > > My speeds dropped by about a third to ~63MB/sec. (Actually I got the same > ~90+ speeds ONCE, and then I decided to rebuild the RAID array as a RAID0 > stripe, rather than a RAID5, in order to see if I could completely saturate > the gig network links, it dropped after that) > > > > Things I’ve tried: > > > > 1) Updated the VMware tools in the guest OS’s > > 2) Double checking the iSCSI parameters in vSphere and OpenFiler > > 3) Double checking my virtual nic/switch setup > > 4) Confirming jumbo frames connectivity over the iSCSI network > path(i.e. ping –d –s 8000) > > 5) Reverting back to the original NICS > > 6) Removing the additional memory in the SAN > > 7) Rebuilding the arrays back to their original RAID5 state > > 8) Rebuilding the volumes/LUNs on the SAN > > 9) Upgrading the Guest VM’s from Virtual Machine v4 to v7 > > 10) Pulling out my hair > > > > Things I haven’t done, and why: > > > > a) Reverting back to ESXi 4.0u1 – This actually shouldn’t be too hard > to do, as the drives with the existing ESXi build are still in the server, > just at a lower boot priority… I’d just have to pull the USB key. The > problem is I don’t know how the guest OS’s are going to behave now that they > are newer machine types (altho v7 is supported on ESXi 4.0u1 it seems), and > have newer versions of VMWare tools installed on them. > > b) Going back to spinning ESXi boot media rather than the USB flash > drive. All our new Dell servers have the option to boot ESXi from internal > SD card, and it doesn’t appear that the ESXi kernel really needs > high-performance _*BOOT VOLUME_ *storage once it’s up and running. > > > > Open to all suggestions > > > > -sc > > > > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
